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ERTS-A satellite imagery

January 1, 1970

The first satellite designed to survey the Earth's resources is scheduled to be launched in 1972. This satellite, known as ERTS-A, will telemeter frames of imagery each covering 100-nautical-mile squares of the Earth. Except for the internal anomalies in the sensor system, the imagery, after being properly scaled, rectified, and controlled, may be considered an orthographic view of the Earth and used as a planimetric photomap. The accuracy of this photomap will be limited, principally by the geometric fidelity of the sensor system rather than by external effects, such as relief displacement, which restrict the direct cartographic use of the conventional aerial photograph. ERST-A is not designed as a topographic mapping satellite but does have real potential' for thematic mapping particularly in areas now covered by topographic maps.

Publication Year 1970
Title ERTS-A satellite imagery
Authors Alden P. Colvocoresses
Publication Type Article
Publication Subtype Journal Article
Series Title Photogrammetric Engineering
Index ID 70112288
Record Source USGS Publications Warehouse
USGS Organization Earth Resources Observation and Science (EROS) Center